Avaya BCM 4.0 Networking Guía de configuración descargar pdf (Pagina 531)

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Chapter 61 Data modules 531

BCM 4.0 Networking Configuration Guide

3 Configure the setting to match the DTE you are connecting to the DDI Mux.

Table 121 describes the Data Module configuration settings.

Table 121 DDI Mux Configuration settings

Setting Value Description

SDI Configuration

Protocol V.35

RS232

RS449

EIA-530

EIA-530A

Interface standard used by the connection between the DDI Mux and

the BCM WAN card or by the connection between the DDI Mux and an

external router.

Default: V.35

B channel data

rate

64 K

56 K

Select the transmission rate per channel (Fixed data lines) assigned to

the module.

Transmit clock

source

Auto

DCE

DTE

The DDI Mux requires a timing signal to clock data transmitted by the

DTE. This signal can be supplied by the DTE or generated internally by

the BCM. If the signal is generated by the DTE, the clock must be

locked to the frequency of the DDI Mux clock.

• Auto: The DDI Mux checks if the clock provided by the DTE is

valid. If the clock is valid, the module uses DTE clocking. If the DTE

clocking is not valid, the module uses its own internal clock (DCE).

• DCE: The internal TxSync clock is used to clock data.

• DTE: The TXClk clock provided by the DTE is used by the DDI Mux

to clock data.

Note: Use the DTE option only for diagnostic purposes.

For all options, the DTE must synchronize to the module.

Transmit clock

inversion

<check box> When the internal DCE signal is used to clock in data, signal delays

caused by cable length can cause clocking errors. To adjust for round

trip delays between the DDI Mux and DTE, invert the internal clock

used by the module to clock in data from the DTE.

To enable clock inversion, select the DTE clock or Auto clock.

Data inversion <check box> When Data Inversion is selected, the DDI Mux inverts the data before

routing it to the T1 connection and DTE. Inversion allows the module to

use the properties of protocols such as HDLC/SDLC (a transmission

standard for data) to meet the ones density requirement of the

network. This feature must be available and activated at the far end.

Loopback status

Loopback state <read-only> Indicates the loopback state.

Loopback Off

Manual DTE

Manual DS30

Automatic DTE

Off: No loopback is active.

Manual DTE: The SDI takes the data received from the DTE and loops

it back towards the DTE.

Manual DS30: The SDI takes the data received from the DS30 bus and

loops it back.

Automatic DTE: The SDI enters in the loopback state when requested

by the DTE. Auto DTE should only be set when supported by DTE.

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Avaya BCM 4.0 Networking Guía de configuración Pagina 531

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